AC_PROG_LEX
AC_C_CONST
AC_HEADER_DIRENT
-AC_CHECK_FUNCS(strdup setvbuf inet_ntoa inet_aton seteuid setresuid setreuid setegid setresgid setregid setsid flock fchmod chmod strftime strptime geteuid setenv unsetenv getenv gmtime_r localtime_r bswap16 bswap64 mkstemp getusershell lstat access getcwd srand48 srand srandom stat strchr strerror strerror_r)
+AC_CHECK_FUNCS(strdup setvbuf inet_ntoa inet_aton seteuid setresuid setreuid setegid setresgid setregid setsid flock fchmod chmod strftime strptime geteuid setenv unsetenv getenv gmtime_r localtime_r bswap16 bswap64 mkstemp getusershell lstat access getcwd srand48 srand srandom stat strchr strerror strerror_r isblank)
AC_CHECK_FUNC(mkstemp,
[MKSTEMP_ST_OBJ=
#include <kdb5.h>
#include <kadm5/admin.h>
-#if defined(NEED_ISBLANK_PROTO) && !defined(isblank)
+#if !defined(isblank) && defined(HAVE_ISBLANK)
+#if defined(NEED_ISBLANK_PROTO)
extern int isblank();
#endif
+#else /* isblank missing */
+#if !defined(isblank)
+#define isblank isspace
+#endif
+#endif
krb5_error_code
krb5_ldap_get_db_opt(char *input, char **opt, char **val)